I married into the Duke's family as the legitimate heir's wife. If she's so important, why don't you just marry her instead! The lady of the house isn't me... I only found out after marrying in, so is it too late? Absolutely not. I will definitely get a divorce!

My family, which had been merchants three generations ago, was called a duke of upstart origins. As the seventh of eight sisters, my marriage was not yet decided. Not wanting to end up like my sixth older sister, married to a man much older in age, I accepted a duke's proposal whose age matched mine. After meeting him several times, we became engaged and married. On our wedding night, he called me by the wrong name and told me I didn't need to fulfill my role as a wife and could do whatever I wanted... There's a woman who is the master's childhood friend serving as the lady of the house? What is my existence? Learning that this marriage was for my dowry in a system where women cannot file for divorce, I have been left alone and ignored even by the servants. Should I just leave things as they are?!